Aka.Goose

I keep it simple and just pop a q-tip in the hole before washing and try to avoid spraying directly at it...I don't think that is even really all that necessary as I always ride the bike for a few minutes right after washing anyway, to evaporate water that's hard to get to...

grayracer513

It's actual purpose is to drain away oil that might come from a leaking cam cover gasket, or fuel "smooge" that would be forced past a leaking spark plug. Draining water is an entirely secondary function. I personally don't concern myself with whether water gets in it or not, but there's certainly no harm in plugging it while washing.